Rotary goal-sifter



. 2 Sh09t8-v$l;68t 1. J. L. KOPLIN'.

Rotary O'oa'bSifters.

No. 224,341; Pat'ent'ed Feb. 10,1380.

N. PETERS, PHDTO-LITNOGRAPHER, WASHINGTON, D. c.

' 2 Sh66tS-She6 2.

J. L.-KOPLIN.

v Rotary Goal-Sifters. No. 224,341.

Patented Fe'b.'l0, 1880.

row. o c.'

, PETERS. FHOTO-LITHOGRAPHER. WASHING f' UNITED i STATE 'Z 1 JA ES n nornmfor nocKFoRD, lnnrnois.

3' ROTARY co u lrTi-i.

srncrrrcarron forming part Tova/ll whom it may concern V 1 Be it known that I, JAMES L. KQPLIN, of

r the city of Rockford, in the county of Winnebago and State of Illinois, have invented a new and usefullmprovement inBotary Goa'L Sifters, of which the followin g is a specificai tion. a v

This invention relates to that class ofrotary coal-sifters employed mainly in domestic'practice to separate the unburned particles of coal from the ashes after they have passed through the stove. I

The object of this invention is to provide a rotary coal-siftcr of a convenient cabinet form, capable of usein dwellings or inclo'sed compartments, to separate the unburned particles of coal from the ashes after theyhave passed from the stove or furnace, and tolconfine the dust within the cabinet, to accomplishjwhich I havedesignedand constructed the cabinetscreen represented in the accompanying drawings, in which Figure 1 is anisometrical representation of; my improved cabinet-screemin which portions of the casings are broken away to reveal the internal structure. Fig. 2 is avertical section, cutting the screen at right angles,

In the figures, A represents the sides, and

,B the bottom, joined to each other, forming a rectangular casing of box form, and in this in-' stance of greater height than'width, and is fitted with a hinged close-fitting lid, 0. This casing forms the outer walls of myimproved cabinet-screen. y a

At D is represented a revolving screen consistin g of heads a, mounted on a central shaft, b, which hasits bearings in the sides of the cabinet toward its upper end. The heads a are separated a proper distance, in which position they are fixed to the shaft, and are relativelyfixed to each other by means of ribs 0,- fixed to their peripheries at proper intervals, producing a reel of suitable size to revolve within the cabinet. A suitablev division of this reel, as at E, is hinged in place, forming a door opening into the reel, and is fitted with a button, at, pivoted to the reel, capable of being turned to overlap the free edge of the hinged door, to hold it in its closed position, and that may also be turned to permit the door to swingropen. This reel, includingthe pf Iietters meat- N0; 224,341, dated ma '10, 1880. "A cationfiiaoeto isolisveg U 1 5 hinged door, is'cove'red with a suitable wirescreen webbing,:F, to permit the'ashes and fine particles to pass through it, and retain the larger particles'of unburned coal.

The door, when opened upward, as represented indotted lines, Fig.2, may be hooked on the pin 6, fixed in the case, which will serve to hold the screen in position to receive the coal andashes to be separated.

wardly-projecting end of the screen-shaft, by means of which the screen may be made to rotate. H represents a hand-lever pivoted at its lower end to the casing, and its free end rising to a convenient'height near the. top of the cabinet. 1 i, f iv At f is represented a trip-stop with enlarged inner end, having its shank passed outward through thecasing and pivoted to the hand- ,lever B, and is provided with a spiral spring, g, surrounding its shank portion, between the casing and the lever, which operates to hold the'shoulders of the stop pressed against the inner surface of the casing. This trip-stop is placed in the plane of travel of the button at, in such a manner that when the hand-l ver H is moved to the position represented in e dotted lines the stop will be moved'inward, as shown in dotted lines,'which, in the revolutions of the screen, will engage the pivoted button and cause it to turn from the hinged door, and permiti-t to drop into the position shown indotted lines at h, which will permit the contents of the screen to be discharged through the opening of the door.

1 represents boards placed in the lower portion of the cabinetlengthwise withthe screen, inclined toward the, center, forming hopperlike sides, which serve to conduct the discharged contents of the screen toward the center of the cabinet.

the screen, pivoted at its ends toward its lower edge centrally in the sides of the cabinet at the point at whichthe inclined hopper sides would meet if produced. One of the pivots of this valve extends through the side of the cabinet, and is fitted witha lever-arm, L, by means of which the valve K may be changed from its position in solid lines to the position represented in dotted lines, and in each posi- .60 Gr represents a'hand-crank fixed to the out- 7 K represents a valve placed lengthwise .of

tion will form an even upper surface with the inclined hopper sides to conduct the screenings or discharged contents of the screen to the drawers designed to receive them.

and P represent drawers of the usual form, fitted to slide into the cabinet lengthwise of the screen, one on each side, below the valve, and are designed to receive the contents of the screen as separated.

m represents inclined plates fixed to the inside of the casing to conduct the screenings and discharged contents of the screen into the drawers.

n represents a button pivoted between the outer ends of the drawers, adapted to overlap the drawers to prevent their accidental displacement.

From the foregoing it will be seen that the hinged lid of the cabinet being raised, and the screen opened, as represented in dotted lines, the ashes to be screened may be deposited in the screen, and the door closed and fixed by means of the button. The lid of the cabinet may then be shut, after which the screen may be revolved by means of the crank-handle, which rotation Will cause the contents of the screen to be separated, and the ashes and smaller particles passing through the meshes of the screen will descend the inclined hopper sides over the valve into one of the drawers, and when sufliciently screened the valve may be changed to the opposite side by means of lever-arm L; then, by means of the hand-lever H, the trip-stop f may be pushed in, and the further revolution of the screen will bring the button (Z in contact with the trip-stop, which will cause it to be turned 011' from the door and permit it to open, and the contents of the screen to be discharged ontothe inclined hopper sides and conducted over the valve into the drawer on the opposite side from the ashes. The drawers can then be withdrawn,

and their contents disposed of as maybe convenient.

By the use of myimproved screen Iam enabled to separate the ashes from the unburned coal, and confine the dust in the cabinet.

I claim as my invention 1. The combination, with the revolving screen having a hinged section, and a button for securing it in a closed position, of aspringpressed trip-stop, arranged to unlock the button when the screen is revolved and discharge the contents of the screen, substantially as set forth.

2. The combination, with a revolving screen and a trip-stop, of inclined hopper sides to conduct the screenings and discharged contents of the screen into suitable receptacles, substantially as hereinbefore set forth.

JAMES L..KOPLIN.

Witnesses:

O. R. GORHAM, THOMAS FERGUSON. 

